Colonel Hugh Montgomerie, 12th Earl of Eglinton, KT (5 November 1739 – 14 December 1819) was a Scottish peer, politician, soldier and composer.

That year he became Lord Lieutenant of Ayrshire, a post he held until his death.

[2] In 1798, having previously succeeded to the earldom through his third cousin, he was elected a Scottish representative peer and moved to the House of Lords.

On 15 February 1806, he was created Baron Ardrossan in the Peerage of the United Kingdom, enabling him to sit the Lords in his own right.

Preparatory work on the canal from the new harbour created at Ardrossan was used as the basis for Glasgow Street, which is the main thoroughfare of the town.